问题 选择题

I had just got up and was about to cook my breakfast _____ the telephone rang loudly, but it hung

up _____ I could answer it.  [ ]

A. when; before        

B. while; before      

C. when; until      

D. as; after

答案

答案:A

问答题 简答题
单项选择题 A1/A2型题